Pressure NISSAN TERRANO 2004 Service Manual PDF

Description
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The unit controls the engine.
On Board Diagnosis Logic
Malfunction is detected when ...Check Items (Possible Cause)
I An excessively high or low voltage from the absolute pressure
sensor (built-into ECM) is sent to ECM. I
ECM
DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch ªONº.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Start engine and wait at least 2 seconds.
4) If DTC is detected, go to ªDiagnostic Procedureº, EC-206.
WITHOUT CONSULT-II
1) Turn ignition switch ªONº and wait at least 2 seconds.
2) Start engine and wait at least 2 seconds.
3) Turn ignition switch ªOFFº, wait at least 5 seconds and then turn
ªONº.
4) Perform ªDiagnostic Test Mode II (Self-diagnostic results)º with ECM.
5) If DTC is detected, go to ªDiagnostic Procedureº, EC-206.
SEC220B
SEF817Y
DTC 0802 ECM 10ZD30DDTi
EC-205
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Component Description
The charge air pressure sensor detects pressure in the exit side of
the charge air cooler. The sensor output voltage to the ECM
increases as pressure increases. The charge air pressure sensor
is not used to control the engine system under normal conditions.
ECM Terminals and Reference Value
Specification data are reference values, and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may damage the
ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
46 G Charge air pressure sen-
sor Engine is running.
Warm-up condition
Idle speed
Approximately 2.0V
On Board Diagnosis Logic
Malfunction is detected when ...
Check Items (Possible Cause)
I An excessively high or low voltage from the sensor is sent to
ECM. I
Harness or connectors
(The sensor circuit is open or shorted.)
I Charge air pressure sensor
SEF340VA
SEF627RA
DTC 0905 TURBO PRESSUREZD30DDTi
EC-220
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DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch ªONº.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Wait at least 1 second.
4) If DTC is detected, go to ªDiagnostic Procedureº, EC-224.
WITHOUT CONSULT-II
1) Turn ignition switch ªONº and wait at least 1 second.
2) Turn ignition switch ªOFFº, wait at least 5 seconds and then turnªONº.
3) Perform ªDiagnostic Test Mode II (Self-diagnostic results)º with ECM.
4) If DTC is detected, go to ªDiagnostic Procedureº, EC-224.
SEF817Y
DTC 0905 TURBO PRESSUREZD30DDTi
EC-221
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Wiring Diagram
LHD MODELS
YEC191A
DTC 0905 TURBO PRESSUREZD30DDTi
EC-222
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RHD MODELS
YEC192A
DTC 0905 TURBO PRESSUREZD30DDTi
Wiring Diagram (Cont'd)EC-223
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Diagnostic Procedure
1 CHECK CHARGE AIR PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Stop engine.
2. Disconnect charge air pressure sensor harness connector.
SEF283Z
3. Turn ignition switch ªONº.
4. Check voltage between charge air pressure sensor terminal 1 and ground with CONSULT-II or tester.
SEF306Z
OK or NG
OK EGO TO 3.
NG EGO TO 2.
2 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors E225, F108
I Harness connectors F135, M842 (RHD models)
I Harness for open or short between charge air pressure sensor and ECM
ERepair open circuit or short to ground or short to power in harness or connectors.
3 CHECK CHARGE AIR PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Check harness continuity between charge air pressure sensor terminal 3 and engine ground. Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK EGO TO 5.
NG EGO TO 4.
DTC 0905 TURBO PRESSUREZD30DDTi
EC-224
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4 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors E225, F108
I Harness connectors F135, M852 (RHD models)
I Harness for open or short between ECM and charge air pressure sensor
ERepair open circuit or short to ground or short to power in harness or connectors.
5 CHECK CHARGE AIR PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 46 and charge air pressure sensor terminal 2. Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK EGO TO 7.
NG EGO TO 6.
6 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors E225, F108
I Harness connectors F135, M842 (RHD models)
I Harness for open or short between charge air pressure sensor and ECM
ERepair open circuit or short to ground or short to power in harness or connectors.
7 CHECK CHARGE AIR PRESSURE SENSOR
1. Remove charge air pressure sensor with its harness connector connected.
2. Turn ignition switch ªONº.
3. Use pump to apply pressure to charge air pressure sensor as shown in the figure.
CAUTION:
IAlways calibrate the pressure pump gauge when using it.
I Inspection should be done at room temperature [10 - 30ÉC (50 - 86ÉF)].
4. Check the output voltage between charge air pressure sensor terminal 2 and engine ground.
SEF449Z
OK or NG
OK EGO TO 8.
NG EReplace charge air pressure sensor.
DTC 0905 TURBO PRESSUREZD30DDTi
Diagnostic Procedure (Cont'd)
EC-225
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8 CHECK SHIELD CIRCUIT
1. Disconnect charge air pressure sensor sub-harness connectors E225, F108 and ECM harness connector.
2. Check continuity between boost sensor sub-harness connector terminal 15 and ground.Continuity should exist.
3. Check continuity between ECM terminal 43 and ground. Continuity should exist.
4. Also check harness for short to power.
OK or NG
OK EGO TO 10.
NG EGO TO 9.
9 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors E225, F108
I Harness connectors F135, M842 (RHD models)
I Harness for open or short between charge air pressure sensor and ground
I Harness for open or short between ECM and ground
E
10 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-78. EINSPECTION END
DTC 0905 TURBO PRESSUREZD30DDTi
Diagnostic Procedure (Cont'd)
EC-226
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Description
SYSTEM DESCRIPTION
The ECM and the electronic control fuel injection pump control unit
(abbreviated as the injection pump control unit) perform the real
time communication (signal exchange).
The ECM transmits the signals of the target fuel injection amount,
target fuel injection timing, and engine speed, etc., and receives the
signals of the pump speed and fuel temperature, etc. from the
injection pump control unit.
By those signals, the injection pump controls the optimum fuel
injection amount and injection timing of the spill valve and timing
control valve.
Injection pump control unit has an on board diagnostic system,
which detects malfunctions related to sensors or actuators built-into
electronic control fuel injection pump. These malfunction informa-
tion are transferred through the line (circuit) from injection pump
control unit to ECM.
FUEL INJECTION AMOUNT CONTROL
In accordance with the target fuel injection amount signal from the
ECM, the injection amount is controlled by controlling the spill valve
in the injection pump and by changing the needle opening time.
FUEL INJECTION TIMING CONTROL
Based on the target fuel injection timing signal from the ECM, the
injection timing is controlled in accordance with the timer spring by
performing the duty control of the timing control valve in the injec-
tion pump and by adjusting the pressure of the timer piston high
pressure chamber.
FUEL TEMPERATURE SENSOR
The sensor detects the fuel temperature in the injection pump and
calibrates the injection amount change by the fuel temperature.
CAM RING POSITION SENSOR
The sensor detects the passing of the protrusion on the sensor
wheel in the injection pump by the semiconductor magnetic resis-
tance element sensor. The cam ring position sensor synchronizes
with the cam ring, and detects the actual advance amount. The
injection pump control unit measures the injection pump revolution
by the signal of the cam ring position sensor.
SEF437Y
DTC 1004 FUEL CUT SYSTEM1ZD30DDTi
EC-237
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Description
The load from the variable nozzle turbocharger control solenoid
valve controls the actuator. By changing the variable nozzle vane
opening through the rods, the intake air volume is adjusted.
The variable nozzle turbocharger control solenoid valve is moved
by ON/OFF pulse from the ECM. The longer the ON pulse, the
charge air pressure rises.
CONSULT-II Reference Value in Data Monitor
Mode
Specification data are reference values.
MONITOR ITEMCONDITION SPECIFICATION
VNT S/V 1 I
Engine: After warming up
I Air conditioner switch: ªOFFº
I Shift lever: Neutral position
I No-load Idle Approx. 56%
2,000 rpm
Approx. 20%
SEF453Z
MEC014E
VARIABLE NOZZLE TURBOCHARGER CONTROL
SOLENOID VALVEZD30DDTi
EC-289
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